Zhang Tianling, Yang Boxiang, Guo Jiayin, Shen Yuanjun, Luo Liangqin, Chen Lei
School of Electronic Engineering, Xidian University, Xi'an 710071, China.
Guangzhou Institute of Technology, Xidian University, Xi'an 710071, China.
Micromachines (Basel). 2025 Feb 26;16(3):260. doi: 10.3390/mi16030260.
A dual-band dual-circularly polarized transmitarray antenna (TA) operating in the 28/39 GHz millimeter-wave band is proposed in this article. The TA unit consists of two parts: a broadband linearly polarized (LP) receiving part and a dual-band dual-circularly polarized transmitting part. An over-2-bit phase compensation is achieved by changing the size of the U-shaped slot and the rotation status of the receiving part. A 24 × 24 TA model with an aperture size of 88.8 mm × 88.8 mm is built up by using the proposed units and fed by a wide-band corrugated horn antenna. The simulated results show that the maximum gain of the dual-band dual-circularly polarized TA is 26.28 dBic within the low-band (26.5-29.5 GHz) and 27.4 dBic within the high-band (37-40 GHz). To verify the accuracy of the simulation, a prototype of the proposed TA is fabricated and measured. The measured maximum efficiencies are 53.56% and 42.89% in low and high bands, respectively. The proposed TA covers two bands (28/39 GHz) for fifth generation (5G) millimeter-wave applications. Moreover, it features low cost, high gain, and high efficiency.
本文提出了一种工作在28/39GHz毫米波频段的双频段双圆极化发射阵列天线（TA）。该TA单元由两部分组成：宽带线极化（LP）接收部分和双频段双圆极化发射部分。通过改变U形槽的尺寸和接收部分的旋转状态实现了超过2比特的相位补偿。利用所提出的单元构建了一个孔径尺寸为88.8mm×88.8mm的24×24 TA模型，并由一个宽带波纹喇叭天线馈电。仿真结果表明，双频段双圆极化TA在低频段（26.5 - 29.5GHz）的最大增益为26.28dBic，在高频段（37 - 40GHz）为27.4dBic。为了验证仿真的准确性，制作并测量了所提出TA的原型。在低频段和高频段测量得到的最大效率分别为53.56%和42.89%。所提出的TA覆盖了用于第五代（5G）毫米波应用的两个频段（28/39GHz）。此外，它具有低成本、高增益和高效率的特点。
